Effect of site of stimulation on the guinea pig's electrically evoked brain stem response.
Stimulation by a bipolar modiolus electrode yields a wider dynamic range than does monopolar stimulation at the same site. Stimulation via a single electrode in the scala tympani or scala vestibuli is characterized by a precipitous input-output function, but current passing from one scala to the other generates a discontinuous function with a shallow slope at low intensities and a steep slope at high intensities.
D000818:Animals; D001933:Brain Stem / Q000502:physiology*; D003051:Cochlea / Q000502:physiology; D004558:Electric Stimulation / Q000379:methods*; D004566:Electrodes; D005072:Evoked Potentials, Auditory; D005260:Female; D006168:Guinea Pigs; D007245:Inferior Colliculi / Q000502:physiology; D011930:Reaction Time; D012405:Round Window, Ear / Q000502:physiology; D012533:Scala Tympani / Q000502:physiology